[issue43186] Recursive call causes core dump in assertRaises

[Terry J. Reedy]

Change by Terry J. Reedy :


--
superseder: Recursive call causes core dump in assertRaises ->  
AssertRaises() causes core dump in handling recursion

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[issue43186] Recursive call causes core dump in assertRaises

[Terry J. Reedy]

Change by Terry J. Reedy :


--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> Recursive call causes core dump in assertRaises

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[issue43186] Recursive call causes core dump in assertRaises

[Yang Feng]

New submission from Yang Feng :

In following teststr.py, class MyString is nestedly instanced in method 
__getattr__(). This script will lead to a  "core dump" in Python interpreter.  
My Python version is  3.9.1 and my operating system is Ubuntu 16.04. 

teststr.py
+++
class StrError(str):
pass

class MyString:

def __init__(self, istr):
self.__mystr__ = istr

def __getattr__(self, content):
with self:
return MyString(getattr(self.__mystr__, content))

def __setattr__(self, content, sstr):
setattr(self.__mystr__, content)

def __enter__(self):
return self

def __exit__(self, exc_type, exc_val, exc_tb):
 raise StrError(self.__mystr__) 
 return True

MyString("hello")
+

--
components: Library (Lib)
messages: 386764
nosy: CharlesFengY
priority: normal
severity: normal
status: open
title: Recursive call causes core dump in assertRaises
versions: Python 3.9

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